Development of single phase shunt active power filter

Abstract

This paper presents development of single phase active power filter for single phase non linear load. Brief comparison of harmonics extraction method, single-phase instantaneous p-q method and synchronous d-q reference frame method has been presented, result is developed using the single-phase synchronous d-q reference frame method for single phase shunt active power filter (APF). To formulate d-q transformation for single-phase system an imaginary vector is considered and achieved by providing a /2 delay to the original signal. The real-time implementation of single-phase d-q frame based shunt APF system is mentioned in detail in this paper. The performance of shunt APF to compensate load current harmonics under sinusoidal and distorted supply voltage conditions is evaluated. Simulation and Digital Signal Controller (DSC) based experimental study are discussed.